Article
Fisheries
Yan Zhao, Yanling Wang, Lingyuan Song, Shuaishuai Li, Xiaowu Chen, Shoujie Tang, Jinliang Zhao
Summary: Under suitable environmental conditions, fish with a functional immune system displayed high disease resistance, growth rate, and reproductive activity. This study investigated the effects of chronic alkalinity stress on the immune response in Nile tilapia and found that long-term feeding of tilapia in low concentration carbonate water promoted immune function and reduced mortality from bacterial infection.
Article
Fisheries
Yasmine H. Tartor, El-Sayed Y. EL-Naenaeey, Hossam M. Abdallah, Mohamed Samir, Mayada M. Yassen, Ashraf M. Abdelwahab
Summary: This study focused on genotyping Aeromonas hydrophila isolated from diseased Nile tilapia, identifying virulence genes and resistance profiles. Results showed high prevalence of A. hydrophila in Nile tilapia with diverse antimicrobial resistance and virulence profiles. The study highlights the importance of monitoring and controlling MDR A. hydrophila in aquaculture.
Article
Agriculture, Dairy & Animal Science
Acucena Veleh Rivas, Angelo Gabriel Vidal dos Santos, Adrieli Barboza de Souza, Gilson Bueno Junior, Gabriela Fernandes de Souza, Estevam Martins de Souza, Louisiane de Carvalho Nunes, Kelvinson Fernandes Viana
Summary: This study developed a bivalent vaccine against two main pathogens affecting fish and confirmed its safety and efficacy through laboratory and large-scale tests. Vaccinated animals showed improved survival and feed conversion. However, field tests are still necessary to confirm real protection.
Article
Environmental Sciences
Mahmoud S. Gewaily, Mustafa Shukry, Marwa F. Abdel-Kader, Mohamed Alkafafy, Foad A. Farrag, Eman M. Moustafa, Hien Van Doan, Mohamed F. Abd-Elghany, Ahmed F. Abdelhamid, Azhar Eltanahy, Mahmoud A. O. Dawood
Summary: The study shows that LP20 can enhance the antioxidant capacity and immunity of Nile tilapia, alleviating inflammation caused by DLM and Aeromonas hydrophila infection.
FRONTIERS IN MARINE SCIENCE
(2021)
Article
Fisheries
Han Huang, Linhai Su, Yan Sun, Biwei Li, Junming Deng, Zhiyong Cao
Summary: A 10-week feeding trial showed that inclusion of 0.04% magnolol in the diet improved antioxidant and immune responses of genetically improved farmed tilapia Oreochromis niloticus without compromising growth performance, suggesting magnolol could be used as an antioxidant and immunostimulant in aquafeed.
AQUACULTURE REPORTS
(2022)
Article
Fisheries
Sweta Das, Chiranjiv Pradhan, Devika Pillai
Summary: The use of coriander essential oil in tilapia feed improved the health and resistance to bacterial infection of the fish. The incorporation of 1% coriander oil in the feed resulted in increased hemoglobin, mean corpuscular volume, mean cell hemoglobin, and superoxide dismutase activity. The coriander oil-fed groups also showed higher survival rates and increased expression of IgM and IL-8.
FISH & SHELLFISH IMMUNOLOGY
(2023)
Article
Infectious Diseases
Le Thanh Dien, Le Buu Ky, Bui The Huy, Muhammad Fadhlullah Mursalim, Pattanapon Kayansamruaj, Saengchan Senapin, Channarong Rodkhum, Ha Thanh Dong
Summary: This study identified a new lytic phage, pAh6.2TG, which showed high specificity and stability against multidrug-resistant Aeromonas hydrophila. In experimental challenges, phage treatment significantly improved survivability of Nile tilapia exposed to the pathogenic MDR A. hydrophila, while reducing bacterial concentrations in both water and fish body. These findings suggest that pAh6.2TG is an effective alternative to antibiotics for controlling MDR A. hydrophila in tilapia and possibly other freshwater fish species.
TRANSBOUNDARY AND EMERGING DISEASES
(2022)
Article
Fisheries
Mohsen Abdel-Tawwab, Doaa A. El-Araby
Summary: This study showed that adding 10 g/kg of licorice root powder significantly improved growth, biochemical, antioxidants, and immune responses in Nile tilapia. It also reduced hepato-renal markers and increased survivability after bacterial challenge.
Article
Environmental Sciences
Nasser M. El-Sabbagh, Riad H. Khalil, Mohammed M. Khallaf, Medhat S. Shakweer, Hanan A. Ghetas, Mohamed M. Atallah
Summary: This study demonstrated that dietary supplementation of Withania somnifera extract could alleviate cadmium chloride-induced toxicity in Nile tilapia by improving blood parameters, antioxidant activities, and acting as an immunostimulant.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Fisheries
A. I. G. Raposo, F. Soares, L. E. C. Conceicao, L. M. P. Valente, T. S. Silva
Summary: Mathematical models can be used to estimate the body composition of fish without sacrificing animals. In this study, Nile tilapia body composition data were collected from 138 scientific publications, and predictive models were developed using different combinations of models and calibration methods. The results showed that model predictions are influenced by the type of model, calibration method, and amount of calibration data available. The best predictive models for Nile tilapia body composition were the allometric model and a robust hybrid model, both calibrated assuming multiplicative error.
Article
Fisheries
Qi Li, Baijian Jiang, Zhiqiang Zhang, Yongxiong Huang, Zhou Xu, Xinjin Chen, Yu Huang, Jichang Jian, Qingpi Yan
Summary: This study identified and characterized several NLRCs and pyroptosis-related genes in Nile tilapia. The results showed that these genes were widely expressed in various tissues and were induced during bacterial infection. They also demonstrated antibacterial and partially antiviral responses, primarily in T cells, NCCs, and Mo/M phi. This research provides a theoretical foundation for further investigation of pyroptosis mechanisms in fish and the evolution of pyroptosis antiviral roles in vertebrates.
FISH & SHELLFISH IMMUNOLOGY
(2022)
Article
Fisheries
Nermeen M. Abu-Elala, Marwa M. Attia, Reham M. Abd-Elsalam, Abdelrhman Gamal, Nehal A. Younis
Summary: Co-infections with various ectoparasites and bacteria were found in a private Nile tilapia farm in Egypt, leading to high fish mortality. The application of peracetic acid effectively reduced the infection by Aeromonas hydrophila and improved the survivability of Nile tilapia by eradicating the ciliated protozoans Ichthyophthirius multifiliis and Trichodina centrostrigeata.
Article
Fisheries
Le Thanh Dien, Nguyen Vu Linh, Pattiya Sangpo, Saengchan Senapin, Sophie St-Hilaire, Channarong Rodkhum, Ha Thanh Dong
Summary: The research demonstrated that using NB-O-3 is a safe and effective method to control bacterial diseases in aquaculture, and it significantly improves the survival rate of Nile tilapia against a lethal pathogen challenge.
JOURNAL OF FISH DISEASES
(2021)
Article
Fisheries
Lekshmi Haridas, Mulloorpeedikayil Rosalind George, Kollanoor Riji John, Mohideenpitchai Mohamed Mansoor, Muthumariappan Selvamageswaran, Paulraj Mageshkumar
Summary: The study describes an experimental challenge of Nile tilapia using tilapia lake virus and focuses on the expression profile of immune genes IPS-1 and TLR-7. The results show that IPS-1 gene is downregulated in the liver during early infection, while slightly upregulated in the kidney and brain. TLR-7 gene is downregulated in the liver and upregulated in the brain.
Article
Immunology
Qi Li, Baijian Jiang, Zhiqiang Zhang, Yongxiong Huang, Zhou Xu, Xinjin Chen, Xitan Hou, Jia Cai, Yu Huang, Jichang Jian
Summary: This study identified and characterized various serotonergic markers in Nile tilapia and investigated the involvement of the serotonin system during bacterial infection. The results showed that serotonergic marker genes were mainly expressed in the brain, and their expression was induced during infection. However, few serotonergic markers were found in immune cells, and no significant immunomodulation effect was observed during the immune response.
FRONTIERS IN IMMUNOLOGY
(2022)